(I) q+w (II) q
(III) w (IV) H-TS
A. (I), (II) and (III)
B. (II) and (III)
C. (I) and (IV)
D. (II), (III) and (IV)
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Correct Answer – D
According to thermodynamics,
`Delta U = q + w`
`G = H – TS`
Internal energy `(U)` and Gibbs energy `(G)` are state functions. Heat `(q)` and work `(w)` are not state functions, they are path functions.
Correct Answer – d
`q+w= DeltaU` and`DeltaU` is a state function `=H-TS = G `and G is a state function.
Correct Answer – B
Correct Answer – D
The thermodynamic parameters which depend only upon the initial and final states of system, are called state functions, such as enthalpy (H=q+W) , Gibbs free energy (G=H-TS) , etc. While those parameters which depend on the path by which those parameters whch depend on the path by which the process is performed rather than on the initial and final states, are called path functions, such as work done , heat, etc.
Correct Answer – B